$(document).ready(function(){
    $.extend({
        show:function(){
            var day="";
      var month="";
      var ampm="";
      var ampmhour="";
      var myweekday="";
      var year="";
   var myHours="";
   var myMinutes="";
   var mySeconds="";
      mydate=new Date();
      myweekday=mydate.getDay();
      mymonth=parseInt(mydate.getMonth()+1)<10?"0"+(mydate.getMonth()+1):mydate.getMonth()+1;
      myday= mydate.getDate();
      myyear= mydate.getYear();
      myHours = mydate.getHours();
      myMinutes = mydate.getMinutes();
      mySeconds = parseInt(mydate.getSeconds())<10?"0"+mydate.getSeconds():mydate.getSeconds();
      year=(myyear > 200) ? myyear : 1900 + myyear;
	  if(myHours < 6)hello='凌晨好! '
		else if(myHours < 9)hello='早上好! '
		else if(myHours < 11)hello='上午好! '
		else if(myHours < 13)hello='中午好! '
		else if(myHours < 18)hello='下午好! '
		else if(myHours < 22)hello='晚上好! '
		else {hello='夜深了，人静了，注意休息! '}
      if(myweekday == 0)
      weekday=" 星期日 ";
      else if(myweekday == 1)
      weekday=" 星期一 ";
      else if(myweekday == 2)
      weekday=" 星期二 ";
      else if(myweekday == 3)
      weekday=" 星期三 ";
      else if(myweekday == 4)
      weekday=" 星期四 ";
      else if(myweekday == 5)
      weekday=" 星期五 ";
      else if(myweekday == 6)
      weekday=" 星期六 ";
     $('#nowtime').html(year+"年"+mymonth+"月"+myday+"日 "+myHours+":"+myMinutes+":"+mySeconds+" "+weekday+" "+hello);
    }
});
$.show()
setInterval("$.show()",1000);
 });